Details
Large assortment of 120 high quality winding stem extenders. Thread outside and inside 0,6 to 1,2mm. The stem extensions are fits winding stems from many mechanical watch movements from Switzerland and Japan, e.g. for many ETA stems, Ronda, Citizen Miyota, Seiko and many more. These stem extenders are used if the winding stem has been discontinued, cut too short, or broken off inside the watch movement. If you still have your original winding stem but it is broken and too short to use with your crown, you can use a stem extender from this assortment, to lengthen the original broken watch stem to extend to the correct length that you need for your repair. You can also use an stem extender that will change the tap (thread) size from a larger or smaller size to a standard tap (thread) size. If you repair high-quality wristwatches, then this set belongs on your workbench. The German company Beco Technic supplies high-quality watch spare parts to watchmakers all over the world.